I tend to be a very wordy person, I'm good with vocabulary, so I offer to help out whenever possible with renaming, however you should probably take it one step at a time. In other words, lets say you want to change the name of Dragonborn to Dragonfolk.
If you do that, focus on RACES first, ignoring other terms until later, or it will just be a jumble of confusing renamings. Also remember that you may need to rename racial abilities, and ESPECIALLY change the fluff or it's still the same thing, at least that's the way I see it. I actually wanted to do something like this myself, though with more homebrew rules. I was going to change the races, throw ability damage back in (to a lesser extent).
Here are a few of my ideas
CLASS
Fighter = Armsmaster
Rogue = Thief
Warlord = Commander
Paladin = Crusader / Knight
Cleric = Priest / Mystic
Wizard = Mage / Magus
Warlock = Sorcerer / Witch
Ranger = Hunter / Huntsman